/* docs.arvemo.ai: the handbook as a site (docs/handbuch.md §5). The palette and type of arvemo.ai (deploy/site), set for reading: left the places, in the middle one page,
   right "on this page". Three theme states: the system's, or data-theme light/dark. 390 px without sideways scroll. */
@font-face { font-family: 'Instrument Sans'; src: url('../assets/instrument-sans.woff2') format('woff2'); font-weight: 400 700; font-display: swap; }
:root {
  --bg: #f7f5f1; --surface: #ffffff; --ink: #0f0f0f; --body: #3a3833; --muted: #6b6862; --stone: #d7d4cd; --faint: #ebe8e2; --signal: #ff3b12; --signal-ink: #c42a06; --tint: #fff1ec;
  --font: 'Instrument Sans', system-ui, -apple-system, 'Segoe UI', sans-serif; --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --nav-w: 264px; --toc-w: 220px; --read-w: 720px; --head-h: 60px;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --bg: #121211; --surface: #1a1a18; --ink: #f4f2ee; --body: #cfccc5; --muted: #98948c; --stone: #34322f; --faint: #232220; --signal: #ff5a33; --signal-ink: #ff8a6b; --tint: #2a1a15; color-scheme: dark; } }
:root[data-theme="dark"] { --bg: #121211; --surface: #1a1a18; --ink: #f4f2ee; --body: #cfccc5; --muted: #98948c; --stone: #34322f; --faint: #232220; --signal: #ff5a33; --signal-ink: #ff8a6b; --tint: #2a1a15; color-scheme: dark; }
* { box-sizing: border-box; margin: 0; }
html { scroll-padding-top: calc(var(--head-h) + 16px); -webkit-text-size-adjust: 100%; }
body { background: var(--bg); color: var(--body); font-family: var(--font); font-size: 16px; line-height: 1.6; padding-left: max(0px, env(safe-area-inset-left, 0px)); padding-right: max(0px, env(safe-area-inset-right, 0px)); }
a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--stone); overflow-wrap: anywhere; }
a:hover { border-color: var(--signal); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; border-radius: 2px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 8px 12px; border: 0; z-index: 100; }
.skip:focus { left: 8px; }

/* header */
.top { position: sticky; top: 0; z-index: 20; background: var(--bg); border-bottom: 1px solid var(--stone); }
.top-in { display: flex; align-items: center; gap: 12px 20px; height: var(--head-h); max-width: 1320px; margin: 0 auto; padding: 0 16px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); border: 0; font-weight: 600; letter-spacing: 0.22em; font-size: 15px; white-space: nowrap; }
.brand:hover { border: 0; }
.brand svg { width: 26px; height: auto; overflow: visible; flex: none; }
.brand .ink { fill: var(--ink); stroke: var(--ink); }
.brand small { font-weight: 500; letter-spacing: 0.12em; font-size: 12px; color: var(--muted); border-left: 1px solid var(--stone); padding-left: 12px; }
.search { position: relative; flex: 1; max-width: 460px; margin-left: auto; }
.search input { width: 100%; height: 38px; font: inherit; font-size: 15px; color: var(--ink); background: var(--surface); border: 1px solid var(--stone); border-radius: 6px; padding: 0 40px 0 12px; }
.search input::placeholder { color: var(--muted); }
.search kbd { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); font: 12px var(--mono); color: var(--muted); border: 1px solid var(--stone); border-radius: 4px; padding: 0 5px; pointer-events: none; }
.results { position: absolute; left: 0; right: 0; top: 44px; background: var(--surface); border: 1px solid var(--stone); border-radius: 8px; box-shadow: 0 12px 32px rgba(0,0,0,.14); max-height: min(70vh, 520px); overflow: auto; padding: 6px; }
.results a { display: block; border: 0; padding: 9px 10px; border-radius: 6px; }
.results a[aria-selected="true"], .results a:hover { background: var(--faint); }
.results b { display: block; color: var(--ink); font-weight: 600; font-size: 15px; }
.results span { display: block; color: var(--muted); font-size: 13px; line-height: 1.4; }
.results em { font-style: normal; font-family: var(--mono); font-size: 11px; color: var(--signal-ink); letter-spacing: .04em; text-transform: uppercase; }
.results p { padding: 10px; color: var(--muted); font-size: 14px; }
.tools { display: flex; align-items: center; gap: 8px; }
.pill { font: 600 13px var(--font); color: var(--ink); background: transparent; border: 1px solid var(--stone); border-radius: 6px; height: 34px; padding: 0 10px; display: inline-flex; align-items: center; cursor: pointer; }
.pill:hover { border-color: var(--signal); }
.menu-btn { display: none; }

/* frame */
.frame { display: grid; grid-template-columns: var(--nav-w) minmax(0, 1fr) var(--toc-w); gap: 0 40px; max-width: 1320px; margin: 0 auto; padding: 0 16px; }
.nav { position: sticky; top: var(--head-h); align-self: start; max-height: calc(100vh - var(--head-h)); overflow: auto; padding: 28px 0 40px; font-size: 14.5px; }
.nav h2 { font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 22px 0 6px; }
.nav h2:first-child { margin-top: 0; }
.nav ul { list-style: none; padding: 0; }
.nav li a { display: block; border: 0; color: var(--body); padding: 5px 10px; margin-left: -10px; border-radius: 6px; line-height: 1.35; }
.nav li a:hover { background: var(--faint); color: var(--ink); }
.nav li a[aria-current="page"] { background: var(--ink); color: var(--bg); font-weight: 600; }
main { min-width: 0; padding: 40px 0 72px; max-width: var(--read-w); }
.crumb { font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--signal-ink); margin-bottom: 14px; }
.crumb a { border: 0; color: inherit; }
h1 { font-size: 38px; line-height: 1.12; font-weight: 600; color: var(--ink); letter-spacing: -.015em; text-wrap: balance; margin-bottom: 14px; }
.lead { font-size: 19px; line-height: 1.5; color: var(--ink); text-wrap: pretty; margin-bottom: 18px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--stone); font-size: 13px; color: var(--muted); }
.chips span b { font: 600 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; margin-right: 6px; color: var(--muted); }
.chips span i { font-style: normal; color: var(--ink); }
article h2 { font-size: 22px; line-height: 1.25; font-weight: 600; color: var(--ink); margin: 40px 0 10px; padding-top: 20px; border-top: 1px solid var(--stone); letter-spacing: -.005em; text-wrap: balance; position: relative; }
article h2 .a { position: absolute; left: -22px; top: 22px; border: 0; color: var(--stone); font: 400 15px var(--mono); opacity: 0; }
article h2:hover .a, article h2 .a:focus { opacity: 1; color: var(--signal); }
article p, article ul, article ol, .tablewrap { margin-bottom: 14px; }
article > .intro p:last-child { margin-bottom: 0; }
article ul, article ol { padding-left: 22px; }
article li { margin-bottom: 5px; }
article li > ul, article li > ol { margin-top: 5px; margin-bottom: 5px; }
article strong { color: var(--ink); font-weight: 600; }
article code { font: .92em var(--mono); background: var(--faint); padding: 1px 5px; border-radius: 4px; }
.tablewrap { overflow-x: auto; border: 1px solid var(--stone); border-radius: 8px; background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th, td { text-align: left; vertical-align: top; padding: 9px 14px; border-bottom: 1px solid var(--faint); min-width: 120px; }
th { font: 600 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); background: var(--faint); }
tr:last-child td { border-bottom: 0; }
td:first-child { color: var(--ink); font-weight: 600; }
.qa strong { display: block; margin-top: 18px; }
.qa p:first-child strong { margin-top: 0; }
.related { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--stone); }
.related h2 { font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); border: 0; margin: 0 0 12px; padding: 0; }
.related ul { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.related a { display: block; border: 1px solid var(--stone); border-radius: 8px; padding: 12px 14px; background: var(--surface); height: 100%; }
.related a:hover { border-color: var(--signal); }
.related b { display: block; color: var(--ink); font-weight: 600; }
.related span { display: block; color: var(--muted); font-size: 13.5px; line-height: 1.4; margin-top: 2px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 28px; }
.pager a { border: 1px solid var(--stone); border-radius: 8px; padding: 12px 14px; background: var(--surface); }
.pager a:hover { border-color: var(--signal); }
.pager small { display: block; font: 600 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.pager b { display: block; color: var(--ink); font-weight: 600; margin-top: 2px; }
.pager .next { text-align: right; grid-column: 2; }
.toc { position: sticky; top: var(--head-h); align-self: start; padding: 40px 0; font-size: 13.5px; max-height: calc(100vh - var(--head-h)); overflow: auto; }
.toc h2 { font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.toc ul { list-style: none; padding: 0; border-left: 1px solid var(--stone); }
.toc a { display: block; border: 0; color: var(--muted); padding: 4px 0 4px 12px; margin-left: -1px; border-left: 2px solid transparent; line-height: 1.35; }
.toc a:hover, .toc a.on { color: var(--ink); border-left-color: var(--signal); }
.foot { max-width: 1320px; margin: 0 auto; padding: 22px 16px 36px; border-top: 1px solid var(--stone); font-size: 13px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 8px 22px; }
.foot a { color: var(--muted); }

/* home */
.hero { padding: 56px 0 24px; max-width: 760px; }
.hero h1 { font-size: 48px; }
.hero .lead { font-size: 21px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; margin: 28px 0 8px; }
.card { display: block; border: 1px solid var(--stone); border-radius: 10px; padding: 16px 18px; background: var(--surface); height: 100%; }
.card:hover { border-color: var(--signal); }
.card em { display: block; font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--signal-ink); font-style: normal; margin-bottom: 8px; }
.card b { display: block; color: var(--ink); font-size: 18px; font-weight: 600; line-height: 1.25; }
.card span { display: block; color: var(--muted); font-size: 14px; line-height: 1.45; margin-top: 6px; }
.areas { margin-top: 40px; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 28px 32px; }
.areas h2 { font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); border: 0; padding: 0; margin: 0 0 8px; }
.areas ul { list-style: none; padding: 0; }
.areas li { margin-bottom: 6px; }
.home main { max-width: none; }
.home .frame { grid-template-columns: minmax(0, 1fr); }

@media (max-width: 1100px) { .frame { grid-template-columns: var(--nav-w) minmax(0, 1fr); } .toc { display: none; } }
@media (max-width: 820px) {
  :root { --nav-w: 0px; }
  .frame { grid-template-columns: minmax(0, 1fr); padding: 0 max(16px, env(safe-area-inset-left, 0px)) 0 max(16px, env(safe-area-inset-right, 0px)); }
  .top-in { flex-wrap: wrap; height: auto; padding: 10px 16px; gap: 8px 12px; }
  .brand small { display: none; }
  .search { order: 3; flex-basis: 100%; max-width: none; margin-left: 0; }
  .tools { margin-left: auto; }
  .menu-btn { display: inline-flex; }
  .nav { display: none; position: static; max-height: none; padding: 16px 0 8px; border-bottom: 1px solid var(--stone); }
  body.menu-open .nav { display: block; }
  .nav { grid-row: 1; }
  main { padding-top: 28px; }
  h1 { font-size: 30px; }
  .hero h1 { font-size: 36px; }
  article h2 .a { display: none; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: 1; text-align: left; }
  html { scroll-padding-top: 130px; }
}
@media print { .top, .nav, .toc, .pager, .foot, .skip { display: none; } .frame { display: block; } body { background: #fff; color: #000; } }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }